Raking-drum.



e. B. e. e. 1I. WHITE.

RAKING DRUM, APPLICATION FILED AUG. 1'7, 190e. 983,662. Patented Feb.7, 1911.

. 2 SHEETS-SHEET l.

w New SIY/ *lum Il" .kuma D) 'lill ,IIIIIVI.fill

C. E. @L C. H. WHITE.

RAKING DRUM.

` APPLICATION FILED AUG. 17, 1908. I 983,662. Patented Feb.7, 1911.

2 SHEETS-SHEET 2 AT 'ET-'Frrcn CHARLES E. WHITE aan cHaRLEsiI. WHITE, oE MoLINE, ILLINOIS.

Ranma-DRUM.

s peciaeation of Letters Patent. application inea Augusta?, 190s.- serm No. 448,921.

ratntedreb. 7, v1911.

To 'all lwhom 'itmay concern:

Be it known 'that we, CHARLES E. WHITE and CHARLES H. WHITE, citizens of the United States, and residents of Moline, county of Rock Island, and State of illinois, havelinvented certain new and useful Improvements in Raking-Drums, of which the following is a specification, and `which are `illustrated in the accompanying drawings,

forminga part thereof.

The invention relates to raking drums adapted to gather thehay `from the ground y the drum on the line 11-1 of Fi 3; Fig. 2

is an end view of the drum; an Fig. 3 1s a transverse section thereof on the line 3-3 of Fig. 1.

The raking drum is ofihat type which l comprisesla cylindrical body portion, usually made of sheet metal, its ends being closed by heads and there being a plurality of movable rake-heads within the cylinder, the teethv of these heads projecting through suitable apertures ofthe cylinder walls, and

mechanism being Iprovided for advancing. and withdrawingt e teeth. The cyhnderbody is designated 10. To the ends of this body there are fitted the heads 11,

12, of cast metal,`each consistin of an annulus and a hub and spokes uniting the two.

As the two hea s are alike but one need be described.

At the inner side of the rim lof the head there is an instanding annular flan e 13,

adapted to fit snugly within the cylin er 10.' A` smular but wi er flange 14, projects outwardly and is adapted to carry a 'cha-in 15, formin a part of the elevating mechanism. At themner ed radially-projecting flange 16, having apertures 17, as many as may be desired, forthe of the flange 14 there is a.

end of the drum, the sections of the ange 16 thus constitutlng teeth for driving these chains.

lTo an instandingannular flange 19 of the head there are pivotally attached a plurality of arms, as shown three in number 20, 21, 22, the free ends of corresponding arms at each end of the drum being united by the rake-- heads 23, 24, 25. The raking teeth 26, 27,'as many as may be required, are preferably of wire and are mounted upon the heads 23, 24 and 25. As shown they are formed in pairs of a single pieceof wire coiled loosely around the head, as shown at 28, 29, to provide for proper resiliency of the teeth.y The connecting portion 30 of the wire of which the pair of teeth yis formed is bentto form-a loop 31, and lits snugly into a longitudinal channel 308L formed in the face of the rake head to which it is firmly secured b a headed stud or bolt 32 set into'the head as 23. The teeth 26, 27, project outwardly from the, wall of the drum, and as the arms carrying the rake-heads swingupon their pivots these teeth are advanced or withdrawn.

Cam plates are provided for effecting the Apositive withdrawal 'of the teeth, .one at each end of the drum. These cam-plates 33,

34:, are rigidly mounted upon a part of the frame 4of the machine, land each comprises a.

hubportion 35, forming a bearing for the lice except when the teet lare in the lowerpart 'of their cycle of movement.,l It is nearl circular inform, being, however, eccent-nc as to the drum, its longest radii being downwardl directed. The camange is curved inwar y, as shown at 41, at that portion engaged by the'. stud 40, as it descends inT its travel. The pivot attaching the rake-head carrying 'arm to the head of the drumbeing in advance ofthe rakehead, the latter tends lto swing inwardlgl'durin the descending movement, "a'nd s ency is overcome by the curvature 41 of the cam, the stud being arrested in its move- -ment thereby bringing the arm to an upright position and eventually tilting it in .the opposite direction, permitting it to fall by gravity as thestud 40 passes beyond the cam shoulder.` The, stud 40 now. resting on the lower portion of the flange 38, the teeth are fully extended. From its lowest portion this cam flange begins to recede from' the periphery of the drum, thereby causing the inward movement of the teeth as theY witho-ut function save to strengthen theh structure, and is curved inwardly to allow free play of the rake-heads should theteeth 'encounter obstrubtions which force them inwardly. Through the remainder ofthe cycle it serves as a support for the studs 40, limiting the inward movement of therake-heads. That portion of this cam which is opposite the shoulder 4() of the cam flange 38 cooperates with the latter in effecting the outward swingof the rake-head carrying arms, as already described.

The spokes 42, 43, 44 of the head of the drumjare so formed and disposed as to provide apertures 45 for lthe accommodation of the studs 40.

rWe claim as our invention- .1. In a raking drum, in combination, a hollow rotatable cylinder having heads, freely swinging arms pivotally attached to the cylinder heads, rake-heads carried by the arms, and 'stationary cams for swinging the arms inwardly during the upper portion of their cycle of movement, the arms being free to move inwardly during the lower porti-on of their cycle of movement.

2. In a raking drum, in combination, a hollow cylinder, raking teeth secured within the cylinder and longitudinally movable through its peripheral wall, means for retracting the teeth during a portion of their cycle, the teeth being gravity-projected through another portion-thereof.

3. In a raking drum, in combination, a

Ahollow rotatable cylinder, swinging arms' its periphery, said teeth being free to swing whenin the raking position. v l

In a raking device, in combination, a rotatable cylinder, teethv pivotally mounted within the cylinder and projecting through its periphery, such teeth being free to swing when in the rakin position, and means forv positively controlling the teeth during the elevating and releasing portion of their cycle.

6. In a raking drum. in combination, a hollow cylinder raking'- teeth secured within thev cylinder and longitudinally movable through its peripheral-wall, the teeth being yieldingly advanced during thev working portio-n of their'cycle.

7. In combination, a pair of rotatableheads, rake bars having outwardly directed 4teeth extending betweenv the heads, vand .swinging arms pivotally attached to the rotatable heads for carrying the rake bars whereby the raking teeth are free to rise and fall in passing over obstructions during the raking portion of their cycle.

8. In combination, a pair of rotatable j heads and rake bars having outwardly directed teeth extending between the heads and movably secured thereto whereby the teeth of the rake bars are free to rise and fall in passing over obstructions during the raking portion of their cycle.

9. In a raking drum, in combination, a hollow rotatable cylinder having heads, swinging arms pivotally attached to the cylinder heads, rake heads carried bythe.

arms, the arms being free to move inwardly during the lower port1on of their cycle of movement.

CHARLES E. WHITE. CHARLES H. WHITE.

Witnesses: l

WM. B. SAMUEL, THos. V. MAGUIRE. 

